nsz Git - libfirm/blob - ir/be/scripts/generate_new_opcodes.pl

   1 #!/usr/bin/perl -w
   2
   3 # This script generates the C code which creates the irop's and
   4 # their coresponding node constructors for all operations in a given spec
   5 # so they can be used as normal firm nodes.
   6 # Creation: 2005/10/19
   7 # $Id$
   8
   9 use strict;
  10 use Data::Dumper;
  11
  12 my $specfile   = $ARGV[0];
  13 my $target_dir = $ARGV[1];
  14 my $state      = 1;
  15 my $cur_op     = "";
  16 my $line_nr    = 0;
  17
  18 our $arch;
  19 our %nodes;
  20
  21 # include spec file
  22
  23 my $return;
  24
  25 no strict "subs";
  26 unless ($return = do $specfile) {
  27         warn "couldn't parse $specfile: $@" if $@;
  28         warn "couldn't do $specfile: $!"    unless defined $return;
  29         warn "couldn't run $specfile"       unless $return;
  30 }
  31 use strict "subs";
  32
  33 my $target_c = $target_dir."/gen_".$arch."_new_nodes.c.inl";
  34 my $target_h = $target_dir."/gen_".$arch."_new_nodes.h";
  35
  36 #print Dumper(%nodes);
  37
  38 # create c code file from specs
  39
  40 my @obst_opvar;       # stack for the "ir_op *op_<arch>_<op-name> = NULL;" statements
  41 my @obst_get_opvar;   # stack for the get_op_<arch>_<op-name>() functions
  42 my @obst_constructor; # stack for node constructor functions
  43 my @obst_new_irop;    # stack for the new_ir_op calls
  44 my @obst_header;      # stack for function prototypes
  45 my @obst_is_archirn;  # stack for the is_$arch_irn() function
  46 my @obst_cmp_attr;    # stack for the compare attribute functions
  47 my $orig_op;
  48 my $arity;
  49 my $cmp_attr_func;
  50 my $temp;
  51 my $n_opcodes = 2;    # we have two additional border opcodes (lowest/highest)
  52
  53 push(@obst_header, "void ".$arch."_create_opcodes(void);\n");
  54
  55 foreach my $op (keys(%nodes)) {
  56         my %n = %{ $nodes{"$op"} };
  57
  58         # determine arity from in requirements
  59         $arity = 0;
  60         if (exists($n{"reg_req"}) && exists($n{"reg_req"}{"in"})) {
  61                 $arity = scalar(@{ $n{"reg_req"}{"in"} });
  62         }
  63
  64         $orig_op = $op;
  65         $op      = $arch."_".$op;
  66         $temp    = "";
  67
  68         push(@obst_opvar, "ir_op *op_$op = NULL;\n");
  69         push(@obst_get_opvar, "ir_op *get_op_$op(void)         { return op_$op; }\n");
  70         push(@obst_get_opvar, "int    is_$op(const ir_node *n) { return get_irn_op(n) == op_$op; }\n\n");
  71
  72         push(@obst_is_archirn, "is_$op(node)");
  73
  74         push(@obst_header, "ir_op *get_op_$op(void);\n");
  75         push(@obst_header, "int is_$op(const ir_node *n);\n");
  76
  77         $cmp_attr_func = 0;
  78         # create compare attribute function if needed
  79         if (exists($n{"cmp_attr"})) {
  80                 push(@obst_cmp_attr, "static int cmp_attr_$op(ir_node *a, ir_node *b) {\n");
  81                 push(@obst_cmp_attr, "  $arch\_attr_t *attr_a = get_$arch\_attr(a);\n");
  82                 push(@obst_cmp_attr, "  $arch\_attr_t *attr_b = get_$arch\_attr(b);\n");
  83                 push(@obst_cmp_attr, $n{"cmp_attr"});
  84                 push(@obst_cmp_attr, "}\n\n");
  85
  86                 $cmp_attr_func = 1;
  87         }
  88
  89         if (exists($n{"rd_constructor"}) && $n{"rd_constructor"} =~ /^NONE$/i) {
  90                 # we explicitly skip the constructor if the specification entry says NONE
  91         }
  92         else {
  93                 $n{"comment"} = "construct $op" if(!exists($n{"comment"}));
  94                 $n{"comment"} =~ s/^"|"$//g;    # remove "
  95                 $n{"comment"} = "/* ".$n{"comment"}." */\n";
  96                 push(@obst_constructor, $n{"comment"});
  97
  98                 # create constructor head
  99                 my $complete_args = "";
 100                 my $arg_names     = "";
 101                 $temp             = "";
 102
 103                 $temp = "ir_node *new_rd_$op(dbg_info *db, ir_graph *irg, ir_node *block";
 104                 if (!exists($n{"args"}) || $n{"args"} =~ /^DEFAULT$/i) { # default args
 105                         if ($arity !~ /^\d+$/) {
 106                                 print "DEFAULT args require numeric arity (0, 1, 2, ...)! Ignoring op $orig_op!\n";
 107                                 next;
 108                         }
 109                         for (my $i = 1; $i <= $arity; $i++) {
 110                                 $complete_args .= ", ir_node *op".$i;
 111                                 $arg_names     .= ", op".$i;
 112                         }
 113                         $complete_args .= ", ir_mode *mode";
 114                         $arg_names     .= ", mode";
 115                 }
 116                 else { # user defined args
 117                         for my $href (@{ $n{"args"} }) {
 118                                 $href->{"type"} .= " " if ($href->{"type"} !~ / [*]?$/); # put a space between name and type if there is none at the end
 119                                 $complete_args  .= ", ".$href->{"type"}.$href->{"name"};
 120                                 $arg_names      .= ", ".$href->{"name"};
 121                         }
 122                 }
 123                 $complete_args = substr($complete_args, 2);
 124                 $temp .= ", $complete_args)";
 125                 push(@obst_constructor, $temp." {\n");
 126                 push(@obst_header, $temp.";\n");
 127
 128                 # emit constructor code
 129                 if (!exists($n{"rd_constructor"}) || $n{"rd_constructor"} =~ /^DEFAULT$/i) { # default constructor
 130                         if ($arity !~ /^\d+$/) {
 131                                 print "DEFAULT rd_constructor requires numeric arity! Ignoring op $orig_op!\n";
 132                                 next;
 133                         }
 134
 135                         $temp  = "  ir_node *res;\n";
 136                         $temp .= "  ir_node *in[$arity];\n" if ($arity > 0);
 137                         $temp .= "  int flags = 0;\n";
 138
 139                         undef my $in_req_var;
 140                         undef my $out_req_var;
 141
 142                         # set up static variables for requirements and registers
 143                         if (exists($n{"reg_req"})) {
 144                                 my %req = %{ $n{"reg_req"} };
 145                                 my $idx;
 146
 147                                 undef my @in;
 148                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 149                                 undef my @out;
 150                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 151
 152                                 if (@in) {
 153                                         $in_req_var = "_in_req_$op";
 154                                         $temp .= "  static const $arch\_register_req_t *".$in_req_var."[] =\n  {\n";
 155                                         for ($idx = 0; $idx <= $#in; $idx++) {
 156                                                 $temp .= "    ".$op."_reg_req_in_".$idx.",\n";
 157                                         }
 158                                         $temp .= "  };\n";
 159                                 }
 160
 161                                 if (@out) {
 162                                         $out_req_var = "_out_req_$op";
 163
 164                                         $temp .= "  static const $arch\_register_req_t *".$out_req_var."[] =\n  {\n";
 165                                         for ($idx = 0; $idx <= $#out; $idx++) {
 166                                                 $temp .= "    ".$op."_reg_req_out_".$idx.",\n";
 167                                         }
 168                                         $temp .= "  };\n";
 169                                 }
 170                         }
 171
 172                         $temp .= "\n";
 173                         $temp .= "  if (!op_$op) {\n";
 174                         $temp .= "    assert(0);\n";
 175                         $temp .= "    return NULL;\n";
 176                         $temp .= "  }\n\n";
 177                         for (my $i = 1; $i <= $arity; $i++) {
 178                                 $temp .= "  in[".($i - 1)."] = op".$i.";\n";
 179                         }
 180                         $temp .= "  res = new_ir_node(db, irg, block, op_$op, mode, $arity, ".($arity > 0 ? "in" : "NULL").");\n";
 181                         $temp .= "  res = optimize_node(res);\n";
 182                         $temp .= "  irn_vrfy_irg(res, irg);\n\n";
 183
 184                         # set flags
 185                         if (exists($n{"irn_flags"})) {
 186                                 foreach my $flag (split(/\|/, $n{"irn_flags"})) {
 187                                         if ($flag eq "R") {
 188                                                 $temp .= "  flags |= arch_irn_flags_rematerializable;   /* op can be easily recalulated */\n";
 189                                         }
 190                                         elsif ($flag eq "N") {
 191                                                 $temp .= "  flags |= arch_irn_flags_dont_spill;         /* op is NOT spillable */\n";
 192                                         }
 193                                         elsif ($flag eq "I") {
 194                                                 $temp .= "  flags |= arch_irn_flags_ignore;             /* ignore op for register allocation */\n";
 195                                         }
 196                                 }
 197                         }
 198
 199                         my $in_param;
 200                         my $out_param;
 201                         # allocate memory and set pointer to register requirements
 202                         if (exists($n{"reg_req"})) {
 203                                 my %req = %{ $n{"reg_req"} };
 204
 205                                 undef my @in;
 206                                 @in = @{ $req{"in"} } if (exists($req{"in"}));
 207                                 undef my @out;
 208                                 @out = @{ $req{"out"} } if exists(($req{"out"}));
 209
 210                                 if (@in) {
 211                                         $in_param = $in_req_var;
 212                                 }
 213                                 else {
 214                                         $in_param = "NULL";
 215                                 }
 216
 217                                 if (@out) {
 218                                         $out_param = $out_req_var.", ".($#out + 1);
 219                                 }
 220                                 else {
 221                                         $out_param = "NULL, 0";
 222                                 }
 223                         }
 224                         $temp .= "\n  /* init node attributes */\n";
 225                         $temp .= "  init_$arch\_attributes(res, flags, $in_param, $out_param);\n";
 226
 227                         $temp .= "\n  return res;\n";
 228
 229                         push(@obst_constructor, $temp);
 230                 }
 231                 else { # user defined constructor
 232                         push(@obst_constructor, $n{"rd_constructor"});
 233                 }
 234
 235                 # close constructor function
 236                 push(@obst_constructor, "}\n\n");
 237
 238         } # constructor creation
 239
 240         # set default values for state and flags if not given
 241         $n{"state"}    = "floats" if (! exists($n{"state"}));
 242         $n{"op_flags"} = "N"      if (! exists($n{"op_flags"}));
 243
 244         push(@obst_new_irop, "\n  memset(&ops, 0, sizeof(ops));\n");
 245         push(@obst_new_irop, "  ops.dump_node     = dump_node_$arch;\n");
 246
 247         if ($cmp_attr_func) {
 248                 push(@obst_new_irop, "  ops.node_cmp_attr = cmp_attr_$op;\n");
 249         }
 250
 251         $n_opcodes++;
 252         $temp  = "  op_$op = new_ir_op(cur_opcode++, \"$op\", op_pin_state_".$n{"state"}.", ".$n{"op_flags"};
 253         $temp .= ", ".translate_arity($arity).", 0, sizeof($arch\_attr_t), &ops);\n";
 254         push(@obst_new_irop, $temp);
 255 }
 256
 257 # emit the code
 258
 259 open(OUT, ">$target_c") || die("Could not open $target_c, reason: $!\n");
 260
 261 print OUT "#include \"gen_$arch\_regalloc_if_t.h\"\n\n";
 262 print OUT @obst_cmp_attr;
 263 print OUT "\n";
 264 print OUT @obst_opvar;
 265 print OUT "\n";
 266 print OUT @obst_get_opvar;
 267 print OUT "\n";
 268
 269 print OUT<<ENDOFISIRN;
 270
 271 static opcode $arch\_opcode_start = -1;
 272 static opcode $arch\_opcode_end   = -1;
 273
 274 int is_$arch\_irn(const ir_node *node) {
 275   opcode opc = get_irn_opcode(node);
 276
 277   assert($arch\_opcode_start > 0 && "missing opcode init");
 278   assert($arch\_opcode_end > 0 && "missing opcode init");
 279
 280   if (opc > $arch\_opcode_start && opc < $arch\_opcode_end)
 281     return 1;
 282
 283   return 0;
 284 }
 285
 286 ENDOFISIRN
 287
 288 print OUT @obst_constructor;
 289
 290 print OUT<<ENDOFMAIN;
 291 /**
 292  * Creates the $arch specific firm operations
 293  * needed for the assembler irgs.
 294  */
 295 void $arch\_create_opcodes(void) {
 296 #define N   irop_flag_none
 297 #define L   irop_flag_labeled
 298 #define C   irop_flag_commutative
 299 #define X   irop_flag_cfopcode
 300 #define I   irop_flag_ip_cfopcode
 301 #define F   irop_flag_fragile
 302 #define Y   irop_flag_forking
 303 #define H   irop_flag_highlevel
 304 #define c   irop_flag_constlike
 305 #define K   irop_flag_keep
 306
 307   ir_op_ops ops;
 308   int cur_opcode = get_next_ir_opcodes($n_opcodes);
 309
 310   $arch\_opcode_start = cur_opcode++;
 311
 312 ENDOFMAIN
 313
 314 print OUT @obst_new_irop;
 315 print OUT "\n  $arch\_opcode_end = cur_opcode;\n";
 316 print OUT "}\n";
 317
 318 close(OUT);
 319
 320 open(OUT, ">$target_h") || die("Could not open $target_h, reason: $!\n");
 321
 322 print OUT "int is_$arch\_irn(const ir_node *node);\n";
 323 print OUT @obst_header;
 324
 325 close(OUT);
 326
 327 ###
 328 # Translates numeric arity into string constant.
 329 ###
 330 sub translate_arity {
 331         my $arity = shift;
 332
 333         if ($arity =~ /^\d+$/) {
 334                 if    ($arity == 0) {
 335                         return "oparity_zero";
 336                 }
 337                 elsif ($arity == 1) {
 338                         return "oparity_unary";
 339                 }
 340                 elsif ($arity == 2) {
 341                         return "oparity_binary";
 342                 }
 343                 elsif ($arity == 3) {
 344                         return "oparity_trinary";
 345                 }
 346                 else {
 347                         return "$arity";
 348                 }
 349         }
 350         else {
 351                 return "oparity_".$arity;
 352         }
 353 }